Someone who unintentionally and without control, sporadically finds and eats "airbiscuits" after getting high on meth. Often this level of intense and irreversible over-amperage if the result of extended and acute methamphetamine usage. It's often identical in appearance to the physical gestures a zombie would act out whilst roaming for human flesh. Distinguishable by a singular, sudden,rapid and twisting motion of the head to either side. During which the zombie quickly opens and closes the jaw as if to bite a yummies treat that is being dangled just above and out of reach. Repeated at random and frequent intervals.
"Damn that dude's ate up.. I'm surprised that SpeedEater ain't broke his neck yet doin' moves like that!"